WayAway - Find cheap flights and get cashback on all your travel deals
Nextflag - Travel word of mouth, made easy.
AirTrack - Telegram bot for flight price tracking
Wanderlog - Collaborative travel planner with combined itinerary and map
Skyscanner - Skyscanner.com compares over 1000 airlines to find you the cheapest airfares, fast.
Sygic Maps - The world's first online maps designed for travelers